What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
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Sleep Apnea Associated with Pregnancy-induced Diabetes, High Blood Of the 167227 women who had gestational diabetes, 67 had sleep apnea. Of the 200902 pregnancies with pregnancy-induced high blood pressure, 166 had sleep Blood Pressure in Children with Obstructive Sleep Apnea -- MARCUS However, hypertension has not been studied systematically in children with the obstructive sleep apnea syndrome (OSAS). We therefore measured blood pressure MedlinePlus: Sticking with sleep apnea treatment cuts BP Obstructive sleep apnea, which is linked to high blood pressure and other heart conditions, is a common problem in which people stop breathing for short Sleep Apnea, Blood Pressure Linked Full-night sleep studies and echocardiography may need to be incorporated into routine assessments of patients with difficult-to-treat high blood pressure, Sleep Apnea - Diagnosis and Treatment of Sleep Apnea Leads to Diagnosis and Treatment of Sleep Apnea Leads to Lower Blood Pressure, Improved Memory. About five years ago, Rebecca started feeling fatigued on a daily Nighttime Breathing Mask Decreases Blood Pressure In People With More than half of those with sleep apnea also have high blood pressure, and their blood pressure does not fall during sleep as it does in most people. High Blood Pressure Linked to Sleep Apnea Researchers at the Johns Hopkins School of Public Health confirmed a possible connection between sleep apnea and hypertension (high blood pressure) in both Sleep Apnea Impairs Blood Pressure Regulation People with obstructive sleep apnea (OSA) are likely to have a blood vessel impairment that may cause daytime blood pressure elevation and may lead to heart Sleep Apnea - Respironics Products. Sleep Systems · Patient Interfaces (Masks) · Sleep Accessories · Patient Management · Diagnostics · Technology · Contact Us High blood pressure dangers: Hypertension's effects on the body It's now thought that high blood pressure itself may help trigger sleep apnea. Also, sleep deprivation resulting from sleep apnea can raise your blood Secondary high blood pressure: When another condition causes Treating sleep apnea with a pressure mask, nasal devices, surgery, weight loss or other steps can help control the high blood pressure. |
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